Beeflies, Bombyliidae are a family of flies
that larvae live on eggs or early stages of grasshoppers, beetles,
Lepidoptera, bees and wasps. They are generally active fliers and Beeflies are great pollinators that frequent many different genera of plants throughout much of the World.
Bombylius major is a common large Beefly that seems to pollinate most Flowers. Larvae are parasitoids of the larvae of solitary bees
Sinuous Bee Fly (Hemipenthes sinuosa) A parasite of parasitic bees such as Banchus and Ophion and parasitic flies like tachinids
Thevenetimyia californica looks like something out of a SciFi comic book.